./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:19:25,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:25,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:25,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:25,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:25,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:25,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:25,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:25,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:25,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:25,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:25,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:25,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:25,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:25,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:25,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:25,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:25,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:25,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:25,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:25,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:25,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:25,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:25,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:25,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:25,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:25,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:25,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:25,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:25,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:25,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:25,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:25,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:25,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:25,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:25,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:25,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:25,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:25,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:25,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:19:25,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:25,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:25,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:25,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:25,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:25,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:25,748 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:25,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:25,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:25,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:19:25,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:25,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:25,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:25,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:25,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:25,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:25,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:25,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:25,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:25,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:25,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:25,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:25,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:25,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:25,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:25,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:25,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:19:25,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:19:25,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:25,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:25,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:25,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:25,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 [2021-10-21 19:19:26,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:26,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:26,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:26,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:26,073 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:26,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-21 19:19:26,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/c29fddff3/8e21f62bf0ba42a2a99687fcadf667ad/FLAGc81d36dd1 [2021-10-21 19:19:26,700 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:26,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-21 19:19:26,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/c29fddff3/8e21f62bf0ba42a2a99687fcadf667ad/FLAGc81d36dd1 [2021-10-21 19:19:27,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/c29fddff3/8e21f62bf0ba42a2a99687fcadf667ad [2021-10-21 19:19:27,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:27,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:27,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:27,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:27,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:27,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8b0fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27, skipping insertion in model container [2021-10-21 19:19:27,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:27,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:27,397 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-21 19:19:27,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:27,417 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:27,476 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-21 19:19:27,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:27,491 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:27,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27 WrapperNode [2021-10-21 19:19:27,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:27,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:27,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:27,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:27,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:27,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:27,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:27,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:27,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:27,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:27,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:27,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:27,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (1/1) ... [2021-10-21 19:19:27,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:27,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:27,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:27,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:19:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:19:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-21 19:19:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-21 19:19:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:19:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-21 19:19:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:19:28,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:28,383 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-21 19:19:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:28 BoogieIcfgContainer [2021-10-21 19:19:28,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:28,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:28,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:28,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:28,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:27" (1/3) ... [2021-10-21 19:19:28,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11232ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:28, skipping insertion in model container [2021-10-21 19:19:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:27" (2/3) ... [2021-10-21 19:19:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11232ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:28, skipping insertion in model container [2021-10-21 19:19:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:28" (3/3) ... [2021-10-21 19:19:28,397 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-21 19:19:28,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:28,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:28,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:28,474 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:19:28,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:19:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:19:28,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:28,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:19:28,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-21 19:19:28,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:28,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124676029] [2021-10-21 19:19:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:28,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:28,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124676029] [2021-10-21 19:19:28,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124676029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:28,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:28,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:19:28,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831669147] [2021-10-21 19:19:28,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:19:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:19:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:19:28,832 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:28,871 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2021-10-21 19:19:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:19:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:19:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:28,889 INFO L225 Difference]: With dead ends: 108 [2021-10-21 19:19:28,889 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:19:28,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:19:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:19:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-21 19:19:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2021-10-21 19:19:28,947 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2021-10-21 19:19:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:28,947 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2021-10-21 19:19:28,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2021-10-21 19:19:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:19:28,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:28,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:19:28,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:19:28,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:28,951 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2021-10-21 19:19:28,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:28,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447619903] [2021-10-21 19:19:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:28,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:29,101 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:19:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:19:29,254 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:19:29,254 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:19:29,258 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:19:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:19:29,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:19:29,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:19:29 BoogieIcfgContainer [2021-10-21 19:19:29,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:19:29,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:19:29,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:19:29,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:19:29,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:28" (3/4) ... [2021-10-21 19:19:29,310 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:19:29,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:19:29,312 INFO L168 Benchmark]: Toolchain (without parser) took 2224.07 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.0 MB in the beginning and 80.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:29,313 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:29,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.02 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 76.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:29,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.31 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 73.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:29,316 INFO L168 Benchmark]: Boogie Preprocessor took 106.66 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 72.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:29,317 INFO L168 Benchmark]: RCFGBuilder took 699.62 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 53.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:19:29,318 INFO L168 Benchmark]: TraceAbstraction took 916.27 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 53.5 MB in the beginning and 80.6 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:29,318 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:19:29,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.02 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 76.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.31 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 73.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.66 ms. Allocated memory is still 104.9 MB. Free memory was 73.8 MB in the beginning and 72.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.62 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 53.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 916.27 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 53.5 MB in the beginning and 80.6 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.39 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 178]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={6:0}] [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={6:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={6:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={6:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={6:0}] [L177] COND TRUE !isnan_double(res) [L178] reach_error() VAL [one_fmod=1, Zero_fmod={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 802.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 83.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.7ms SsaConstructionTime, 180.5ms SatisfiabilityAnalysisTime, 87.9ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:19:29,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:19:32,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:19:32,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:19:32,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:19:32,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:19:32,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:19:32,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:19:32,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:19:32,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:19:32,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:19:32,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:19:32,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:19:32,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:19:32,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:19:32,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:19:32,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:19:32,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:19:32,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:19:32,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:19:32,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:19:32,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:19:32,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:19:32,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:19:32,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:19:32,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:19:32,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:19:32,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:19:32,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:19:32,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:19:32,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:19:32,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:19:32,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:19:32,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:19:32,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:19:32,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:19:32,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:19:32,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:19:32,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:19:32,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:19:32,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:19:32,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:19:32,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:19:32,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:19:32,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:19:32,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:19:32,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:19:32,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:19:32,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:19:32,393 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:19:32,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:19:32,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:19:32,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:19:32,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:19:32,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:19:32,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:19:32,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:19:32,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:19:32,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:19:32,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:19:32,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:19:32,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:19:32,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:19:32,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:19:32,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:19:32,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:19:32,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:32,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:19:32,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:19:32,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:19:32,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:19:32,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:19:32,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:19:32,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:19:32,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:19:32,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:19:32,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:19:32,402 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 [2021-10-21 19:19:32,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:19:32,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:19:32,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:19:32,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:19:32,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:19:32,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-21 19:19:32,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/ade69738a/1a7ada19f23c4200b5bd075af647c5e6/FLAG14e11d8e0 [2021-10-21 19:19:33,619 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:19:33,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-21 19:19:33,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/ade69738a/1a7ada19f23c4200b5bd075af647c5e6/FLAG14e11d8e0 [2021-10-21 19:19:33,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/data/ade69738a/1a7ada19f23c4200b5bd075af647c5e6 [2021-10-21 19:19:33,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:19:33,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:19:33,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:33,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:19:33,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:19:33,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:33" (1/1) ... [2021-10-21 19:19:33,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7ffbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:33, skipping insertion in model container [2021-10-21 19:19:33,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:19:33" (1/1) ... [2021-10-21 19:19:33,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:19:33,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:19:34,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-21 19:19:34,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:34,264 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:19:34,390 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-21 19:19:34,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:19:34,425 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:19:34,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34 WrapperNode [2021-10-21 19:19:34,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:19:34,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:34,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:19:34,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:19:34,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:19:34,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:19:34,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:19:34,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:19:34,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:19:34,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:19:34,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:19:34,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:19:34,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (1/1) ... [2021-10-21 19:19:34,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:19:34,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:34,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:19:34,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:19:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-21 19:19:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-21 19:19:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:19:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:19:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-21 19:19:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:19:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:19:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:19:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:19:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:19:39,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:19:39,741 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-21 19:19:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:39 BoogieIcfgContainer [2021-10-21 19:19:39,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:19:39,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:19:39,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:19:39,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:19:39,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:19:33" (1/3) ... [2021-10-21 19:19:39,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dcec3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:39, skipping insertion in model container [2021-10-21 19:19:39,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:19:34" (2/3) ... [2021-10-21 19:19:39,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dcec3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:19:39, skipping insertion in model container [2021-10-21 19:19:39,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:39" (3/3) ... [2021-10-21 19:19:39,755 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-21 19:19:39,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:19:39,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:19:39,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:19:39,830 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:19:39,831 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:19:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:19:39,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:39,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:19:39,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:39,866 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-21 19:19:39,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:19:39,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69133213] [2021-10-21 19:19:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:39,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:19:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:19:39,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:19:39,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:19:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:41,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:19:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:41,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:19:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:41,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:19:41,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69133213] [2021-10-21 19:19:41,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69133213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:41,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:19:41,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:19:41,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194866459] [2021-10-21 19:19:41,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:19:41,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:19:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:19:41,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:19:41,388 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:41,414 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2021-10-21 19:19:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:19:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:19:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:41,427 INFO L225 Difference]: With dead ends: 108 [2021-10-21 19:19:41,428 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:19:41,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:19:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:19:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-21 19:19:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2021-10-21 19:19:41,493 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2021-10-21 19:19:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:41,493 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2021-10-21 19:19:41,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2021-10-21 19:19:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:19:41,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:41,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:19:41,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:41,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:19:41,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:19:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2021-10-21 19:19:41,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:19:41,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003146445] [2021-10-21 19:19:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:41,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:19:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:19:41,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:19:41,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:19:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:42,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:19:42,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:50,049 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (_ +zero 11 53)) ULTIMATE.start_fmod_double_~y))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) is different from true [2021-10-21 19:19:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:53,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:20:02,404 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-21 19:20:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:28,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:20:28,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003146445] [2021-10-21 19:20:28,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003146445] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:20:28,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:20:28,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-21 19:20:28,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148308060] [2021-10-21 19:20:28,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:20:28,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:20:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:20:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=56, Unknown=2, NotChecked=30, Total=110 [2021-10-21 19:20:28,989 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:31,286 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_double_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (_ +zero 11 53))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 19:20:33,720 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_double_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (_ +zero 11 53))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 19:20:38,030 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (_ +zero 11 53)) ULTIMATE.start_fmod_double_~y))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|))) is different from true [2021-10-21 19:20:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:42,676 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2021-10-21 19:20:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:20:42,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 19:20:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:42,715 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:20:42,715 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:20:42,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 16420.6ms TimeCoverageRelationStatistics Valid=32, Invalid=69, Unknown=5, NotChecked=76, Total=182 [2021-10-21 19:20:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:20:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-21 19:20:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 51 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2021-10-21 19:20:42,726 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2021-10-21 19:20:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:42,727 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2021-10-21 19:20:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2021-10-21 19:20:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:20:42,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:42,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:20:42,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:42,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:20:42,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:20:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2021-10-21 19:20:42,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:20:42,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900385280] [2021-10-21 19:20:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:42,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:20:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:20:42,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:20:42,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:20:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:43,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:20:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:44,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:20:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:45,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:20:45,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900385280] [2021-10-21 19:20:45,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900385280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:20:45,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:20:45,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-21 19:20:45,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619816705] [2021-10-21 19:20:45,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:20:45,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:20:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:20:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:20:45,125 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:45,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:45,556 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2021-10-21 19:20:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:20:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 19:20:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:45,557 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:20:45,558 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:20:45,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1277.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:20:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:20:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:20:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:20:45,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-21 19:20:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:45,559 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:20:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:20:45,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:20:45,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:20:45,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:45,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:20:45,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:20:45,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:45,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:20:56,892 WARN L207 SmtUtils]: Spent 10.94 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2021-10-21 19:21:02,875 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2021-10-21 19:21:02,877 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2021-10-21 19:21:02,878 INFO L853 garLoopResultBuilder]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2021-10-21 19:21:02,878 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:21:02,878 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2021-10-21 19:21:02,878 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2021-10-21 19:21:02,879 INFO L853 garLoopResultBuilder]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2021-10-21 19:21:02,879 INFO L857 garLoopResultBuilder]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2021-10-21 19:21:02,879 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2021-10-21 19:21:02,879 INFO L857 garLoopResultBuilder]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,880 INFO L857 garLoopResultBuilder]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2021-10-21 19:21:02,880 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2021-10-21 19:21:02,880 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 159) no Hoare annotation was computed. [2021-10-21 19:21:02,881 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2021-10-21 19:21:02,881 INFO L857 garLoopResultBuilder]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2021-10-21 19:21:02,881 INFO L857 garLoopResultBuilder]: For program point L55(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,881 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,882 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 62) no Hoare annotation was computed. [2021-10-21 19:21:02,882 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 107) no Hoare annotation was computed. [2021-10-21 19:21:02,882 INFO L857 garLoopResultBuilder]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2021-10-21 19:21:02,882 INFO L857 garLoopResultBuilder]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2021-10-21 19:21:02,883 INFO L853 garLoopResultBuilder]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2021-10-21 19:21:02,883 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:21:02,883 INFO L853 garLoopResultBuilder]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2021-10-21 19:21:02,883 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-21 19:21:02,884 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2021-10-21 19:21:02,884 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2021-10-21 19:21:02,884 INFO L853 garLoopResultBuilder]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2021-10-21 19:21:02,884 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:21:02,885 INFO L857 garLoopResultBuilder]: For program point L177(lines 177 180) no Hoare annotation was computed. [2021-10-21 19:21:02,885 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 153) no Hoare annotation was computed. [2021-10-21 19:21:02,885 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-21 19:21:02,885 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-10-21 19:21:02,886 INFO L853 garLoopResultBuilder]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= ULTIMATE.start_fmod_double_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-21 19:21:02,886 INFO L857 garLoopResultBuilder]: For program point L178(line 178) no Hoare annotation was computed. [2021-10-21 19:21:02,886 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 113) no Hoare annotation was computed. [2021-10-21 19:21:02,887 INFO L853 garLoopResultBuilder]: At program point L162(lines 25 163) the Hoare annotation is: (exists ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (= |ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (_ +zero 11 53)) ULTIMATE.start_fmod_double_~y))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) [2021-10-21 19:21:02,887 INFO L853 garLoopResultBuilder]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2021-10-21 19:21:02,887 INFO L857 garLoopResultBuilder]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,887 INFO L857 garLoopResultBuilder]: For program point L147(lines 147 153) no Hoare annotation was computed. [2021-10-21 19:21:02,888 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2021-10-21 19:21:02,888 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 53) no Hoare annotation was computed. [2021-10-21 19:21:02,888 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,888 INFO L857 garLoopResultBuilder]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,889 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:21:02,889 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 178) no Hoare annotation was computed. [2021-10-21 19:21:02,889 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-10-21 19:21:02,889 INFO L857 garLoopResultBuilder]: For program point L66(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,890 INFO L860 garLoopResultBuilder]: At program point L182(lines 165 183) the Hoare annotation is: true [2021-10-21 19:21:02,890 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 73) no Hoare annotation was computed. [2021-10-21 19:21:02,890 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-21 19:21:02,890 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) [2021-10-21 19:21:02,891 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 161) no Hoare annotation was computed. [2021-10-21 19:21:02,891 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2021-10-21 19:21:02,891 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2021-10-21 19:21:02,891 INFO L857 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-10-21 19:21:02,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:21:02,911 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,912 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,912 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,912 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,913 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:02,913 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,913 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,913 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,914 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:02,915 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,916 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,916 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,916 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,916 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:02,917 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,917 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,917 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:02,919 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,920 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:02,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:21:02 BoogieIcfgContainer [2021-10-21 19:21:02,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:21:02,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:02,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:02,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:02,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:19:39" (3/4) ... [2021-10-21 19:21:02,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:21:02,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:21:02,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-21 19:21:02,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:21:02,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:21:02,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:21:02,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:02,989 INFO L168 Benchmark]: Toolchain (without parser) took 89089.71 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 54.2 MB in the beginning and 58.8 MB in the end (delta: -4.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,990 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:02,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.74 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 53.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.80 ms. Allocated memory is still 73.4 MB. Free memory was 53.0 MB in the beginning and 50.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,992 INFO L168 Benchmark]: Boogie Preprocessor took 118.01 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,993 INFO L168 Benchmark]: RCFGBuilder took 5100.32 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 52.5 MB in the end (delta: -3.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,994 INFO L168 Benchmark]: TraceAbstraction took 83174.49 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 52.0 MB in the beginning and 61.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:02,994 INFO L168 Benchmark]: Witness Printer took 66.20 ms. Allocated memory is still 104.9 MB. Free memory was 61.6 MB in the beginning and 58.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:03,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.74 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 53.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.80 ms. Allocated memory is still 73.4 MB. Free memory was 53.0 MB in the beginning and 50.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.01 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5100.32 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 52.5 MB in the end (delta: -3.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 83174.49 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 52.0 MB in the beginning and 61.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.20 ms. Allocated memory is still 104.9 MB. Free memory was 61.6 MB in the beginning and 58.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 178]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 83077.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.4ms, AutomataDifference: 14226.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 17108.5ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 155 SDtfs, 6 SDslu, 405 SDs, 0 SdLazy, 33 SolverSat, 2 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4723.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 17698.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 49 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 58.4ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 17042.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.7ms SsaConstructionTime, 2236.0ms SatisfiabilityAnalysisTime, 48438.3ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 14 QuantifiedInterpolants, 469 SizeOfPredicates, 19 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant [2021-10-21 19:21:03,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:03,016 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,016 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,016 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:03,017 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,017 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,017 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-21 19:21:03,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] Derived loop invariant: (\exists ULTIMATE.start_fmod_double_~y : C_DOUBLE :: \result == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.mul~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ULTIMATE.start_fmod_double_~y), ~fp.mul~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ULTIMATE.start_fmod_double_~y))) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant [2021-10-21 19:21:03,020 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-21 19:21:03,020 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-21 19:21:03,240 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 19:21:03,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1473da24-553f-4203-91ee-62afa9f41637/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...